| Submitter | Yauhen Kharuzhy |
|---|---|
| Date | Nov. 6, 2011, 4:46 p.m. |
| Message ID | <1320598006-17678-2-git-send-email-jekhor@gmail.com> |
| Download | mbox | patch |
| Permalink | /patch/123938/ |
| State | New |
| Headers | show |
Comments
Patch
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c index 39e41fb..1cf6a0b 100644 --- a/drivers/rtc/rtc-mxc.c +++ b/drivers/rtc/rtc-mxc.c @@ -290,6 +290,17 @@ static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm) */ static int mxc_rtc_set_mmss(struct device *dev, unsigned long time) { + /* RTC_DAYR register is 9-bit in MX1 SoC, + * save time and day of year only + */ + if (cpu_is_mx1()) { + struct rtc_time tm; + + rtc_time_to_tm(time, &tm); + tm.tm_year = 70; + rtc_tm_to_time(&tm, &time); + } + /* Avoid roll-over from reading the different registers */ do { set_alarm_or_time(dev, MXC_RTC_TIME, time);
There is no way to track year in the i.MX1 RTC: Days Counter register is 9-bit wide only. Attempt to save date after 1970-01-01 plus 512 days causes endless loop in mxc_rtc_set_mmss(). Fix this by resetting year to 1970. Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com> --- drivers/rtc/rtc-mxc.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-)